AutoCodes – Cadillac – P0B8C Cadillac

P0B8C Cadillac Code - Hybrid/Electric Vehicle Battery 17 Circuit Performance

Quick Answer

The Hybrid/Electric Vehicle battery pack contains 288 cells. Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0B8C Cadillac indicates Hybrid/Electric Vehicle Battery 17 Circuit Performance.
Common causes: Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 995

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0B8C Cadillac Description

The Hybrid/Electric Vehicle battery pack contains 288 cells. Groups of three cells are welded together in parallel. There are a total of 96 cell groups in the hybrid/EV battery pack assembly. These cell groups are electrically connected in-series. Each individual cell group is rated at 3.7 V, for a nominal system voltage of 355 V direct current. The battery cells are also grouped together into three sections. The first 90 cells/30 cell groups make up battery section one. This section is adjacent to the cowl and contains batteries 67 through to 96. Battery section two is located behind section one. It is made up of 72 cells/24 cell groups and contains batteries 43 through to 66. The transverse battery section is section number three, it is made up of the remaining 126 cells/42 cell groups and contains batteries 1 through to 42. The three battery sections are individually serviceable components.
The battery energy control module monitors the voltage of the 96 battery cell groups through the four hybrid/EV battery interface control modules. Voltage sense circuits are attached to each individual cell group, and these sense circuits terminate at a connector located on the top surface of the battery section. A serviceable auxiliary battery wiring harness joins this connector to a hybrid/EV battery interface control module, also located on the top surface of the battery section. The hybrid/EV battery interface control module encodes the voltage reading and transmits it to the battery energy control module through the battery control harness. There is one hybrid/EV battery interface control module located on battery sections one and two, and two hybrid/EV battery interface control modules associated with battery section three. The hybrid/EV battery interface control module, battery energy control module wiring harness, auxiliary battery wiring harness, and battery energy control module are all considered serviceable components.
The battery energy control module will determine when a fault condition is present. Diagnostics and system status are communicated from the battery energy control module to hybrid/EV powertrain control module 2 through serial data. The hybrid/EV powertrain control module 2 is the host controller for diagnostic trouble code information.

OBDII Code P0B8C Cadillac - Hybrid/Electric Vehicle Battery 17 Circuit Performance - AutoCodes.com — P0B8C Cadillac Code - Hybrid/Electric Vehicle Battery 17 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P0B8C Cadillac?

Faulty Hybrid/Electric Vehicle Battery Pack
Faulty Hybrid/Electric Vehicle Battery Interface Control Module

How to Fix the DTC P0B8C Cadillac?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0B8C Cadillac code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0B8C Cadillac Code

1. What are the common symptoms of OBDII code P0B8C in a Cadillac Hybrid/Electric Vehicle?

- Common symptoms include reduced hybrid system performance, decreased fuel efficiency, and potential battery-related warnings on the dashboard.

2. What are the possible causes of OBDII code P0B8C in a Cadillac Hybrid/Electric Vehicle?

- Possible causes may include a faulty hybrid/electric vehicle battery, issues with the battery management system, wiring problems, or a malfunctioning sensor.

3. How can I troubleshoot OBDII code P0B8C in my Cadillac Hybrid/Electric Vehicle?

- Troubleshooting steps may involve checking the battery connections, inspecting the wiring harness for damage, testing the battery voltage, and scanning for other related trouble codes.

4. Can I drive my Cadillac Hybrid/Electric Vehicle with OBDII code P0B8C present?

- It is not recommended to drive the vehicle with this code present, as it may lead to further damage to the hybrid system or compromise the battery performance.

5. How can I clear OBDII code P0B8C in my Cadillac Hybrid/Electric Vehicle?

- Clearing the code can be done using an OBDII scanner tool, but it is important to address the underlying issue causing the code before resetting it.

6. Is it safe to attempt DIY repairs for OBDII code P0B8C in a Cadillac Hybrid/Electric Vehicle?

- DIY repairs can be risky due to the complexity of hybrid/electric vehicle systems. It is recommended to seek assistance from a qualified technician or dealership for proper diagnosis and repair.

7. What are the potential repair options for resolving OBDII code P0B8C in a Cadillac Hybrid/Electric Vehicle?

- Repair options may include replacing the hybrid/electric vehicle battery, repairing wiring or connectors, recalibrating the battery management system, or addressing any other identified issues.

8. How much does it typically cost to fix OBDII code P0B8C in a Cadillac Hybrid/Electric Vehicle?

- Repair costs can vary depending on the specific issue causing the code, the extent of the repairs needed, and whether any parts need to be replaced. It is advisable to get a professional estimate.

9. Are there any maintenance tips to prevent OBDII code P0B8C from recurring in a Cadillac Hybrid/Electric Vehicle?

- Regularly inspecting and maintaining the hybrid/electric vehicle battery, following manufacturer-recommended maintenance schedules, and addressing any warning signs promptly can help prevent this code from recurring.

10. Can OBDII code P0B8C affect the overall performance of a Cadillac Hybrid/Electric Vehicle?

- Yes, this code can impact the performance and efficiency of the vehicle's hybrid system, leading to reduced fuel economy, power delivery issues, and potential safety concerns related to the battery system.